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3 years ago

Solving Problems: Using Ohm's law

Physics

1 answer:

JulijaS [17]3 years ago

8 0

A) Since V = I/R, we know that VR = I so 16 x 24 = 384.

B) I/V = R so 2/6 which = 0.333

and for C i physically cannot open the pic but good luck and use Voltage = Current / Resistence

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Question 12 (Mandatory) (5 points)

sergij07 [2.7K]

F = ma
F = (6kg) (3.5m/s2)
F = 21 N

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3 years ago

Wat is the volume of a marble in mL?

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4/3 pi (radius)^3
If the radius is in cm the volume will be in mL

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3 years ago

Who studies this branch of physics? What types of careers are there in this branch of physics? What particular subjects should s

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4 years ago

An image of a car with height of 14 cm occurred in the mirror which is located at a T-

Thepotemich [5.8K]

Answer:

The distance of car form the mirror is 330 cm.

Explanation:

height of object, h = 140 cm

height of image, h' = 14 cm

radius of curvature, R = 60 cm

focal length, f = R/2 = + 30 cm

Let the distance of image is v and the distance of object is u.

$\frac{h'}{h}\frac{v}{u}\\\\\frac{14}{140} =\frac{v}{u}\\\\v =\frac{u}{10}$

Use the formula of focal length

$\frac{1}{f}=\frac{1}{v}+\frac{1}{u}\\\\\frac{1}{30}=\frac{10}{u}+\frac{1}{u}\\\\\frac{1}{30}=\frac{11}{u}\\\\u = 330 cm$

3 0

3 years ago

A toy plane with a mass of 20 kg is flying at 10 m/s. What is its kinetic energy?

gladu [14]

Answer:

$\boxed {\boxed {\sf A. \ 1000 \ Joules}}$

Explanation:

Kinetic energy can be found using the following formula.

$E_k=\frac{1}{2}mv^2$

where m is the mass and v is the velocity.

The mass of the toy plane is 20 kilograms and the velocity is 10 meters per second.

$m= 20 \ kg \\v= 10 \ m/s \\$

Substitute the values into the formula.

$E_k=\frac{1}{2}(20 \ kg) (10 \ m/s)^2$

Solve the exponent first.

(10 m/s)²= 10 m/s *10 m/s= 100 m²/s²

$E_k=\frac{1}{2} (20 \ kg) (100 \ m^2/s^2)$

Multiply the last two numbers together.

$E_k= \frac{1}{2}(2000 \ kg*m^2/s^2)$

Multiply by 1/2 or divide by 2.

$E_k= 1000 \ kg*m^2/s^2$

1 kilogram square meter per square second is equal to 1 Joule.
Our answer of 1000 kg*m²/s² is equal to 1000 Joules

$E_k= 1000 \ J$

The kinetic energy of the toy plane is 1000 Joules

4 0

3 years ago

Read 2 more answers